Table 1 Synthesis of FL and BPAOL base oils using 2-alkylfurans and aldehydes of varying molecular sizes.

Reaction conditions: HAA reactions of 2-alkylfurans with aldehyde to FL were conducted using 0.05 g of Aquivion PW98, 10 mmol 2-alkylfuran, and 5 mmol aldehyde at 65°C for 6 hours. HDO of FL to the corresponding BPAOL over the Ir-ReOx/SiO2 catalyst was performed using 0.3 g of FL in 10 ml of cyclohexane solvent and 0.15 g of catalyst at 5 MPa H2 and 170°C for 12 hours.


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ReagentsHAA reactionHDO reaction
EntryR1R2ProductsYield (%)ProductsYield (%)
1Methyln-UndecylC22-FL180C22-BPAOL191
2Ethyln-UndecylC24-FL182C24-BPAOL185
3n-Propyln-UndecylC26-FL194C26-BPAOL187
4n-Butyln-UndecylC28-FL189C28-BPAOL184
5n-Pentyln-UndecylC30-FL190C30-BPAOL187
6n-Hexyln-UndecylC32-FL189C32-BPAOL182
7*n-Heptyln-UndecylC34-FL185C34-BPAOL183
8n-PentylMethylC20-FL189C20-BPAOL187
9n-Pentyln-PentylC24-FL293C24-BPAOL289
10n-Pentyln-HeptylC26-FL291C26-BPAOL291
11n-Pentyln-NonylC28-FL287C28-BPAOL287
12n-Pentyl2-EthylpentylC26-FL385C26-BPAOL387
13n-Hexyl2-EthylpentylC28-FL386C28-BPAOL382
14n-Heptyl2-EthylpentylC30-FL288C30-BPAOL281

*Eight hours.

†Twelve hours.